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Urgent! Senior Backend Engineer Job Opening In Santa Fe – Now Hiring The Mobile-First Company

Senior Backend Engineer



Job description

Senior Backend Engineer

A dynamic role at a mobile‑first company that builds AI‑powered business software.

Join to apply for the Senior Backend Engineer role at The Mobile‑First Company.

2 days ago: Be among the first 25 applicants.

About The Mobile‑First Company

Most tools for small businesses weren’t built for real operators.

They were built for employees in offices, not people running a business from their phone.

We are changing that.

We build mobile‑first business software that feels like a consumer app, runs on AI, and spreads like a creator brand.

Our first product, Allô, gives customers a second number on their phone, answers missed calls with AI, transcribes everything, and syncs it to their CRM.

Over 20,000 businesses use it every day.

We are scaling to expenses, invoicing, and more.

We have raised plus 5 million dollars from Lightspeed, EMBLEM, and 30+ top operators.

Our team is based in Paris, Buenos Aires, and Miami.

Responsibilities

  • Work side by side with the CTO to build the foundations, present, and future of our backend and AI systems.

  • Develop and enhance backend systems for existing and new applications in conjunction with mobile engineers.

  • Contribute to system design, infrastructure planning, CI/CD processes, and data workflows.

What You'll Be Working On

  • Implementing and maintaining scalable and reliable backend systems using Kotlin, Java, Go, Python or similar.

  • Designing and defining backend tools, databases, and the architecture of our apps.

  • Working directly with cloud services such as AWS, Supabase, Cloudflare.

  • Creating tools, libraries, or components to enhance the efficiency of backend development processes.

What We’re Looking For

  • Backend Engineering : Proficiency in backend development with expertise in languages like Kotlin, Java, Go, Python or similar; familiarity with database design, management, and optimization; track record of building and maintaining scalable and reliable backend systems; experience with AI is a strong plus.

  • Systems Architecture : Expertise in designing scalable and maintainable backend architectures; knowledge of choosing appropriate architectural patterns; ability to monitor the whole architecture using tools like New Relic or Datadog.

  • Performance & Data : Understand how to build scalable and maintainable code; care about what to measure and its impact; track behaviour, usage, and performance, and improve based on it.

  • How You Think : Ask smart questions, challenge ideas when needed, help shape what’s next, and think in terms of user value and business impact.

  • How You Work : Communicate clearly, give feedback with no ego, help others grow, move fast, take ownership and thrive in ambiguity; comfortable working in English.

What Matters To Us

  • 4+ years experience designing and building high‑performance systems used by millions.

  • Proactive, autonomous, and capable of filling gaps.

  • English proficiency (our official language); Spanish and French are a plus.

What We Offer

  • Competitive salary (in USD or local equivalent).

  • Equity package.

  • 10‑day team retreats abroad every quarter.

  • 30‑day onboarding in Paris with flights and housing covered.

  • Laptop and work setup of your choice.

  • Private health insurance (for US or LATAM hires).

How to Apply

Click the Apply button on this page to send your application.

No cover letter needed—just tell us who you are and why this role fits you.

If you’re not the perfect match but want to join us, send a spontaneous application.

If you’re part of an underrepresented group in tech, we especially want to hear from you.

We welcome people from all backgrounds.

Seniority level: Mid‑Senior level.

Employment type: Full‑time.

Job function: Engineering and Information Technology.

Industry: Mobile Computing Software Products.

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